There are aftermarket companies that make the remote locking flip key for various model MB's, some with alarm systems and others that will integrate into other alarm systems, remote start, etc. The issue that needs to be resolved is that MB key blanks are not alike in length, width or thickness, so finding a "universal" flipkey remote will likely mean modifying the key blank to work with the remote. I'm waiting for a unit from germany that supposedly works with the W201 key.